<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>1_非受控组件</title>
</head>
<body>
    <!-- 准备好一个“容器” -->
    <div id="test"></div>
    <!-- 引入react核心库 -->
    <script type="text/javascript" src="../js/react.development.js"></script>
    <!-- 引入react-dom 用于支持react操作DOM -->
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <!-- 引入babel 用于将jsx转换为js -->
    <script type="text/javascript" src="../js/babel.min.js"></script>

    <script type="text/babel">  // 此处一定要写babel
    // 1. 创建组件
    class Login extends React.Component {
      handleSubmit = (event) => {
        event.preventDefault() // 阻止表单提交
        const {username, password} = this
        alert(`你输入的用户名是：${username.value}, 你输入的密码是：${password.value}`)
      }

       render(){
        return(
          <form onSubmit={this.handleSubmit}>
            {/*<form action="http://www.atguigu.com" onSubmit={this.handleSubmit}>*/}
               用户名： <input ref={c => this.username = c} type="text" name="username" />
               密码：<input ref={c => this.password = c} type="password" name="password" />
               <button>登录</button>
           </form>
        )
       }
    }
    // 2. 渲染虚拟组件到页面
    ReactDOM.render(<Login a="1" b="2" />, document.getElementById('test'))

    </script>
</body>
</html>